69 all-fiberglass TA hoods are junk IMO. Every one I've seen has a huge bulge that makes it stick up over the fenders. The fiberglass on metal frame TA hoods are of much higher quality.
I can't speak to the quality of 400/350 fiberglass hoods. Like the fiberglass TA hoods, I'm sure you can cut out the fiberglass where the hood latch goes if desired, but I'd use hood pins to be safe.
